C Problem

hello everyone,
I have a program below :

Code:

#include<stdio.h>
#include<stdlib.h>
int main()
{
	int i;

	while((i=getchar())!=EOF)
	{
		printf("%c ",i);
	}
	
	system("pause");
}

What I saw when this program runs is that characters input are not printed at the same time as is clear from the while loop.
What I want is that characters should be printed as soon as it is entered.
Can u tell me some solution to it ???????

1. Read the intro threads - you'll learn about such things as code tags - fixed
2. Pay attention to the forum you post in - this is C, and you posted in C++ - also fixed.

Input and output (to stdout) are buffered by default.

The characters are normally echoed, meaning that you see what you print. Don't know what you mean with your question.
You should actually get double the input you post. One for the echo and one from printf().

What do you get exactly?

Originally Posted by sanjay.nitk

hello everyone,
I have a program below :
What I want is that characters should be printed as soon as it is entered.
Can u tell me some solution to it ???????

Code:

#include<stdio.h>

int main()
{
  char ch,choice;
  int val=0;
  clrscr();
  while(val)
  {
    printf("\nenter the char\n");
    ch=getche();   //get the char from user
    putch(ch);     //immediately display that char
    printf("\nwant to continue..?(Y/N)\n");
    choice=getche();
    if(choice=='y' || choice=='Y')
       val=1;
    else val=0;
  }
 return 0;
 }

As far as i understood ur problem statmnt, this is what i think you wanted..

Do not use void main! SourceForge.net: Void main - cpwiki
Furthermore, you are using val without initializing it.
You are also too trigger happy in using non-standard constructs. Avoid getche at least. Use the standard getchar.

Here's a good K&R example.

Code:

#include <stdio.h>

int main() {
     int x;
     while ((x = getchar()) != EOF)
          putchar(x);
     return 0;
}

This is a timeless classic, IMO.

Babkockdood: notice that your example is similiar to sanjay.nitk's code, except that it is simplified and uses putchar instead of printf, but that makes no real difference in this case (i.e., sanjay.nitk's observation will remain essentially the same).

Originally Posted by Elysia

Do not use void main! SourceForge.net: Void main - cpwiki
Furthermore, you are using val without initializing it.
You are also too trigger happy in using non-standard constructs. Avoid getche at least. Use the standard getchar.

Elysia: thanks for ur advice on using void and usin uninitialized vars, i'l keep these in mind..
But i couldn't use getchar and immediately print d char entered as sanjay.nitk wanted.. anyway i'l try again.. and what is the problem with getche()..?

getche is not a standard C function. Therefore, it would be best to avoid if there is no absolute need. You should just keep that in mind.